The FBI and other law enforcement agencies have waged legal war on encryption and privacy technologies.

You may have heard many news stories about the legal battle between Apple and the FBI over unlocking an iPhone that belonged to the San Bernardino shooter. However, that was just one battle in a much larger fight.

Now, in an effort to make its iPhone surveillance-and-hack proof, Apple has rehired security expert and cryptographer Jon Callas, who co-founded the widely-used email encryption software PGP and the secure-messaging system Silent Circle that sells the Blackphone.

"Callas has said he is against companies being compelled by law enforcement to break into their own encrypted products," the report reads.

"But he has also said he supports a compromise proposal under which law enforcement officials with a court order can take advantage of undisclosed software vulnerabilities to hack into tech systems, as long as they disclose the vulnerabilities afterward so they can be patched."

Earlier this year, Apple was engaged in a battle with the US Department of Justice (DoJ) over a court order asking the company to help the FBI unlock iPhone 5C of San Bernardino shooter Syed Farook.

Basically, the company was deliberately forced to create a special, backdoored version of its iOS, so that the FBI may be able to Brute Force the passcode on Farook's iPhone without losing the data stored in it.

Although Apple refused to do so, and now the Apple wanted to remove its own ability to break its iPhone security in future iPhone models, thereby eliminating the chances for government and intelligence agencies for demanding backdoors.